Foldable, self-supporting, adjustable book holder



FIG. 1 is a front perspective view of a foldable, self-supporting, adjustable book holder showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and

FIG. 8 is a rear elevational view thereof.

The structure shown in dotted lines is a representation of a book, and such structure is not part of the design sought to be patented. 

The ornamental design for a foldable self-supporting, adjustable book holder, as shown and described. 